Internal-combustion engine



May 29, 1928.

W. H. TANGEMAN INTERNAL COMBUSTION ENGINE IN V ENTOR. WH. @Uffa/Wm? BY ATToR Y. y

Filed Sept. 15, 1924 Patented May 29, 1928.

f imrilsn STATES PMNTw OFF Y WILLIAM H. TANGEMAN, yor o1\rr..ARm,yoALI'roRNIaVAssrGNoR To JAMES v. BALDWIN Ann HARRY e. MooRn, Born4 orLosANGnLEs, CALIFORNIA'i rNrERNAL-coMRUsrroN ENGINE.

Application `tiled September 1B, 1924. Serial No. 737,466.

pump may at all timesfbe automatically' controlled regardless off theamount of heat applied to the device. y

A further object is to `provide an auto-r matic regulating device of thecharacter stated in which the heat regulating properties are' dependentupon and involves the use of substances whose heat` conductivity lessensas its temperature rises.

With the above and other objectsin view the invention consists in thenovel and useful provision, formation, construction, asso@ ciatio'n ofparts, members and features, all

hereinafter described,fshown in the drawing and pointed out in theclaims.

In the drawing:

Figure' 1 is a side view of a gas engine and my thermostaticregi'ilating' device applied to the engine exhaust, with the lower endof the thermal 'pump seated in the device; n Figure 2 'is a verticalsection of my regulatine` device and a cross section of the engineexhaust in which the device is mounted.` taken on the line 2-2 of Figure3;

Figure 3 is a 'plan view of my regulating device and the exhaust takenon line 3-3 of .Figure 2, showingthe thermal pump in horizontal section;i

Figure 4 is a horizontal section of my deviceltaken on line'Llof Figure2.

'In the several iigures'of the drawing, corresponding parts aredesignated by the same reference characters.

.Referring with particularity tothe drawr ing, the invention comprisesthe heating element in the form of a receptacle A, an expansion chamberB, and a pump 'receiving socket C.- The chamberI B is joined to theupper end of the receptacle A and in communication therewith and is ofconsiderably larger diameter than the receptacle A, the upper wallthereof being concaved to prevent expansion and outward bulgingr underthe influence of the expansion of any heat .conducting substance used intheV device.

The pump socket C is secured at its upper 'end to the upperr chamberwall b, extends through said wall, and vdepends within the f receptacleA nearly to the bottom thereof, the socket being of slightly ,lessdiameter than the receptacle to provide a space abe tween the -walls .ofthe receptacle `and rthe walls 'of the socket.- to receive `mercury orother suitable substance D. `In this pai`- ticularcase the substanceused is mercury as it provides a direct metallic heat conducting contactbetween the walls of the receptacle andthe socket at low temperatureswhich is broken as the temperature rises and the nieicury changes fromliquid to vapor'.` The, device as above described ismounted in theexhaust E of a gas. engine F with the receptacle A extending intotheexhaust through an aperture c in the `upper wall thereof and with itschamber B resting upon said upperwalhA The lower portion of a gasoline'vapor pumpv GrL fits tightly but slidably in the socket G and has itsbottom slightly spaced from the bottom of said socket C, a gasolinesupply pipe l leading into said pumpiand a dis' charge pipe 2'. leadingfrom "the pumpv into thel reservoir or carburetor well H.

The heat of the exhaust-` Ewis conducted through the wall of thereceptacle A, the mercury D and the wall of the socket C to the pumppart Gr, thereby heating the gasoline inthe:pumrp`v to such degreelas t0cause vaporizat-ion and expansion thereof asa necessary preliminary' tothe operation of At low temperatuies,tlie mercury remains in liquid formand'in contact with the wall of the receptacle A and the socket C, whichin turn contacts with the pump member G, thus providing a good heatconducting metallic contact between the hot exhaust gases and the pumpmemberG. lAs' the temperan ture Aof the 'exhaust rises', the' ymercuryeX- pan'ds and ultimately vapori'ze's to break the good'heatconducting'metallic Contact be` tween 'the (nihau's't gases and' themember G, thereby reducing the'temperature of the latter. As thetemperature of member G falls, the mercury vapor liquefies to establishmetallic'l contact again, and this alter-A nating vaporizing andliquefying of the mercury operate to keep the temperatureof pos mre ,01x

m n na,

medi

ment cy una pant adapt@ 'fermngr `lneans 3 t duct and a @iSupply tha eQnpf means foi" n fm1. from Said Saura@ m aldjgg .a I `pa adapte/dto be"a oparatod",bywtba application of heatdthamf m0; ahaatconfinada@alamant"hzwingwapart` thereof mfl'angnd naad duct to`be'heated "by the asaf passing therethrough; afl (50" part lstnamed!

